@import url("https://fonts.googleapis.com/css2?family=Open+Sans&display=swap");

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --background-color: #bbdefb;
    --blue-50: #e3f2fd;
    --blue-100: #bbdefb;
    --blue-A700: #2962ff;
    --green-50: #e8f5e9;
    --green-100: #c8e6c9;
    --green-A700: #00c853;
    --purple-50: #f3e5f5;
    --purple-100: #e1bee7;
    --purple-A700: #aa00ff;
    --orange-50: #fff3e0;
    --orange-100: #ffe0b2;
    --orange-A700: #ff6d00;
    --orange-700: #f57c00;
    --grey-900: #212121;
    --white: #ffffff;
    --round-button-active-color: #212121;
    --translate-main-slider: 100%;
    --main-slider-color: #e3f2fd;
    --translate-filters-slider: 0;
    --filters-container-height: 3.8rem;
    --filters-wrapper-opacity: 1;
}

html {
    font-size: 62.5%;
}

html,
body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: background-color 0.4s ease-in-out;
    background-color: var(--background-color);
}

button {
    border: none;
    cursor: pointer;
    background-color: transparent;
    outline: none;
}

nav.amazing-tabs {
    background-color: var(--white);
    border-radius: 2.5rem;
    user-select: none;
    padding-top: 1rem;
}

.main-tabs-container {
    padding: 0 1rem 1rem 1rem;
}

.main-tabs-wrapper {
    position: relative;
}

ul.main-tabs,
ul.filter-tabs {
    list-style-type: none;
    display: flex;
}

ul.main-tabs li {
    display: inline-flex;
    position: relative;
    padding: 1.5rem;
    z-index: 1;
}

.avatar,
.avatar img {
    height: 4rem;
    width: 4rem;
    border-radius: 50%;
    pointer-events: none;
}

.avatar img {
    object-fit: cover;
}

.round-button {
    height: 4.8rem;
    width: 4.8rem;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--grey-900);
    transition: color 0.2s ease-in-out;
}

.round-button:hover,
.round-button.active {
    color: var(--round-button-active-color);
}

.round-button svg {
    pointer-events: none;
    height: 2.8rem;
    width: 2.8rem;
    transform: translate(0, 0);
}

.main-slider {
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 0;
    padding: 1.5rem;
    z-index: 0;
    transition: transform 0.4s ease-in-out;
    transform: translateX(var(--translate-main-slider));
}

.main-slider-circle {
    height: 4.8rem;
    width: 4.8rem;
    border-radius: 50%;
    transition: background-color 0.4s ease-in-out;
    background-color: var(--main-slider-color);
}

.animate-jello {
    animation: jello-horizontal 0.9s both;
}

@keyframes jello-horizontal {
    0% {
        transform: scale3d(1, 1, 1);
    }
    30% {
        transform: scale3d(1.25, 0.75, 1);
    }
    40% {
        transform: scale3d(0.75, 1.25, 1);
    }
    50% {
        transform: scale3d(1.15, 0.85, 1);
    }
    65% {
        transform: scale3d(0.95, 1.05, 1);
    }
    75% {
        transform: scale3d(1.05, 0.95, 1);
    }
    100% {
        transform: scale3d(1, 1, 1);
    }
}

.filters-container {
    overflow: hidden;
    padding: 0 3rem;
    transition: max-height 0.4s ease-in-out;
    max-height: var(--filters-container-height);
}

.filters-wrapper {
    position: relative;
    transition: opacity 0.2s ease-in-out;
    opacity: var(--filters-wrapper-opacity);
}

.filter-tabs {
    border-radius: 1rem;
    padding: 0.3rem;
    overflow: hidden;
    background-color: var(--orange-50);
}

.filter-tabs li {
    position: relative;
    z-index: 1;
    display: flex;
    flex: 1 0 33.33%;
}

.filter-button {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.8rem;
    flex-grow: 1;
    height: 3rem;
    padding: 0 1.5rem;
    color: var(--orange-700);
    font-family: "Open Sans", sans-serif;
    font-weight: 400;
    font-size: 1.4rem;
}

.filter-button.filter-active {
    transition: color 0.4s ease-in-out;
    color: var(--grey-900);
}

.filter-slider {
    pointer-events: none;
    position: absolute;
    padding: 0.3rem;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.filter-slider-rect {
    height: 3rem;
    width: 33.33%;
    border-radius: 0.8rem;
    background-color: var(--white);
    box-shadow: 0 0.1rem 1rem -0.4rem rgba(0, 0, 0, 0.12);
    transition: transform 0.4s ease-in-out;
    transform: translateX(var(--translate-filters-slider));
}
